Disk-shaped electronic bubbles in gaseous helium |
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Authors: | V. B. Shikin |
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Affiliation: | (1) Institute of Solid-State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, 142432, Russia |
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Abstract: | The structure of 2D anions placed on a hydrogen substrate in the presence of gaseous helium is discussed. It is shown that these structures, shaped like quasi-two-dimensional disks, are created in a threshold-like manner in the vicinity of critical density nc~1020 cm?3, which is appreciably lower than the critical density for the appearance of spherical electronic bubbles in gas and linearly depends on temperature. Experiment confirms the existence of such autolocalized states. |
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